Oshi no Ko’s fourth and final season revealed a new teaser visual and trailer on August 16, 2026, at the Ichigo Production☆Fan Thanksgiving 2026 event in Japan. Doga Kobo returns with the full core staff. No premiere date and no episode count were announced — only that this season ends the anime.
The announcement was made on Sunday, August 16, 2026, at the Ichigo Production☆Fan Thanksgiving 2026 fan event in Japan, and was carried the same day by Anime Corner and Anitrendz. It is the first new material from the final season since the season was confirmed in March 2026, when the production marked the announcement with a trailer and key visual of its own.
What Oshi no Ko revealed on August 16
Two things: a teaser visual and a teaser trailer. The visual shows Aqua, Ai, Akane Kurokawa and the current B-Komachi lineup in formal outfits, lit by a star-shaped light, echoing the star that appears in the eyes of characters throughout the series. A companion video gives closer looks at background characters.
That is the entire announcement. There was no premiere date, no episode count, and no new cast. The production has not given a release window of any kind, so treat any specific date attached to this reveal as a guess rather than a report.
The staff and cast are unchanged
Every senior creative role carries over from the first three seasons, which is the most practically useful detail in the announcement. Doga Kobo animates, Daisuke Hiramaki directs, Jin Tanaka handles series composition, and Kanna Hirayama returns on character design. The principal cast returns as well: Takeo Otsuka as Aqua Hoshino, Yurie Igoma as Ruby, Megumi Han as Kana Arima, Manaka Iwami as Akane Kurokawa and Rumi Okubo as MEMcho.
Continuity of staff matters more than usual here. An anime that changes studios between its penultimate and final season usually does so because of a scheduling problem, and it usually shows. Nothing in this announcement suggests that.
How much manga is left, and what that implies about length
The question the announcement does not answer — how long the final season is — can be narrowed down, because the source material is finished and countable. Aka Akasaka and Mengo Yokoyari ended the manga at chapter 166 in the 50th issue of Weekly Young Jump, published on November 14, 2024, per Oricon News. Season 3 finished around chapter 127. That leaves roughly 39 chapters for the final season to adapt.
| Season | Episodes | Original run | Manga chapters (approx.) |
|---|---|---|---|
| Season 1 | 11 | April 12 – June 28, 2023 | Not independently verified |
| Season 2 | 13 | July 3 – October 6, 2024 | Not independently verified |
| Season 3 | 11 | January 14 – March 25, 2026 | 81–127 |
| Season 4 (final) | Not announced | Not announced | 128–166 |
Run the arithmetic and the range is narrow. Season 3 adapted roughly 47 chapters across 11 episodes, or about 4.3 chapters an episode — a brisk pace, helped by a one-hour finale. Hold that pace and the remaining 39 chapters take about nine episodes. Drop to three chapters an episode, a common rate for a series adapting a dense, dialogue-heavy source without cutting, and it takes thirteen. Either way the answer lands between nine and thirteen episodes.
That is our estimate rather than an announcement, and it rests on a chapter count we could only verify at one end. But the useful part is what the whole range has in common: every plausible pace lands inside a single cour. A split-cour final season, of the kind that has become common for big finales, would leave the studio padding. It is the strongest available reason to expect one continuous run of episodes, and it is why a fourth season was a sensible way to end the adaptation rather than a film.
The anime will be the last adaptation to reach this ending
Here is the unusual thing about this finale, and it goes almost unmentioned in the coverage: the ending is not a secret. It has been public for well over a year, in more than one medium.
The manga concluded in November 2024. The live-action series arrived on Prime Video on November 28, 2024, and the feature film that completed it, Oshi no Ko: The Final Act, adapted the closing arc and opened in Japan on December 20, 2024, reaching Prime Video internationally on April 18, 2025. So by the time the anime’s final season airs — realistically 2027, given that no date exists yet — the conclusion will have been available to anyone who wanted it for more than two years.
This changes what the season has to do. It cannot trade on surprise, because a large part of its audience already knows where the story lands. What it can do is execute: Doga Kobo’s staging of the series’ set pieces, and the performances of a cast that has played these roles since 2023, are the reasons to watch a story you may already be able to spoil for yourself. Adaptations that arrive last are judged on craft, not on plot.
What has not been confirmed
Worth stating plainly, because the gap between what was announced and what is being reported is wide: there is no premiere date, no episode count, no new opening or ending theme, and no confirmed streaming arrangement beyond the fact that Crunchyroll has carried the previous seasons. The season was confirmed as the final one back on March 25, 2026, immediately after the season 3 finale, as Anime News Network reported at the time — that part is not new today. What is new is the footage.
For context on where this sits among the season’s other returning titles, see our fall 2026 anime lineup. Oshi no Ko is worth remembering as seinen rather than shonen — it is serialised for an adult readership, which is exactly why its showbusiness satire has the teeth it does, and why it appears on our list of the best manga of all time.
Frequently Asked Questions
When does Oshi no Ko season 4 come out?
No release date has been announced. The August 16, 2026 reveal at the Ichigo Production☆Fan Thanksgiving event included only a teaser visual and trailer. Given that no date exists and no production window has been given, a 2027 premiere is the realistic expectation, but that is an inference and not an announcement.
Is season 4 really the final season of Oshi no Ko?
Yes. The fourth season was confirmed as the final season on March 25, 2026, immediately after the season 3 finale aired, and the August 2026 teaser visual and trailer followed as the season’s latest promotional material.
How many episodes will the final season have?
It has not been announced. Around 39 manga chapters remain to be adapted. At season 3’s adaptation pace that works out to about nine episodes, and about thirteen at a slower rate — so a single cour is the most likely shape. That is our estimate, not a confirmation.
Where can I watch Oshi no Ko?
Crunchyroll carries the series, and the earlier seasons have also streamed on HIDIVE. No streaming arrangement has been announced specifically for the final season.
Does the ending already exist somewhere?
Yes. The manga finished at chapter 166 on November 14, 2024, and the live-action film Oshi no Ko: The Final Act adapted the closing arc, opening in Japan on December 20, 2024. The anime’s final season will be the last of the three adaptations to reach the ending.
